Interface Descriptions
1-3
1.2.3 Board Characteristics
The board characteristics for the LSI22910 are:
•
PCI board dimensions
Approximately 9.5 x 4.0 inches
•
Universal 64-bit PCI card edge connector
•
ISA/EISA bracket
1.3 Interface Descriptions
This section provides a more detailed explanation about the PCI
Interface, the SCSI Interface, the SCSI Activity LED Interface, and Wide
Ultra2 SCSI.
1.3.1 The PCI Interface
PCI is a high-speed standard local bus for interfacing a number of I/O
components to the processor and memory subsystem in a high end PC.
The PCI functionality for the LSI22910 is contained within the LSI Logic
LSI53C896 PCI to SCSI I/O Processor chip. The LSI53C896 connects
directly to the PCI bus and generates timing protocol in compliance with
the PCI Local Bus Specification Revision 2.1 standard.
The PCI interface operates as a 32-bit or 64-bit DMA bus master. The
connection is made through edge connector J1 (see
on
). The signal definitions and pin numbers conform to the PCI
Local Bus Specification Revision 2.1 standard. The LSI22910 conforms
to the PCI universal signaling environment for a 5 V or 3.3 V PCI bus.
1.3.2 The SCSI Interface
The SCSI functionality for the LSI22910 is contained within the LSI Logic
LSI53C896. The LSI53C896 connects directly to the SCSI buses for SE
or LVD SCSI applications and generates timing and protocol in
compliance with the SCSI standard. Each SCSI interface operates at a
burst transfer rate of up to 40 Mbytes/s for wide SE transfers, and up to
80 Mbytes/s for wide LVD SCSI transfers.
Summary of Contents for LSI22910
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